Hoisting-bucket.



PATENTED MAY 22, 1906.

D. MOSBY.

HOISTING BUCKET.

APPLIOATION FILED SEPT. 1s. p05.

Q1 4 sHEBTs-SHBET 1.

PATENTED MAY 22, 190e.

A. D. MOSBY. HOISTING BUCKET. APPLICATION TILBD SEPT 13, w05

4 SHEETS-SHEET 2.

PATENTED MAY 22, `i906.

A. D. MOSBY. HOISTING BUCKET. APPLIUATION rum SEPT. 1a. 1905.

4 SHEETS-SHEET 3.

mm w.

E n wwwa co. muxo-uwocmmas wnmcrzw. u c.

PATENTED MAY 22, 1906.

A. D. MOSBY. HOISTING BUCKET. APPLwATroN HLBD SEPT. 1a. 190s.

.UNITED STATES PATENT OEEICE.

ALFRED D. .-MOSBY, OE PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE DODGE COAL STORAGE COMPANY, OE NAUGATUCK, CONNECTI- CUT, A CORPORATION OE CONNECTICUT.

HOISTING-BUCKET.

' Specification of Letters Patent.

Patented May 22, 1906.

To all whom it may concern.-

Beit known that I, ALFRED D. MOsBY, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Hoisting-Buckets, of which the followin is a specification.

' My invention re ates to certain improvements in hoisting-.buckets of the clam-shell type,in whichfthe scoops are hung from the shell of the-bucket in such a manner that they open full width to receive a load and close upon the material, carrying the material to any predetermined point and then discharge it by separating the scoops.

The object of my invention is to so construct a bucket of this type that the scoops can be opened full width, so as to enter the material on edge, and then to turn without materially closing the bucket to such an anle that when the edges of the scoo s are awn together the material will readi y pass into the scoops.

A further object of the invention is to so construct a bucket that a very little opening or separation of the scoops is required to discharge the entire contents of the bucket.

These objects I attain in the following manner, reference being had to the accompanying drawings, in whichof the buc et.

on which are a pair of segments E', one at Figure 1 is a sectional elevation illustrating my improved hoisting-bucket in a closed position. Fig. 2 is a side view of Fig. 1. ig. 3 is an inverted plan view of the bucket in the open position. Fig. 4 is a side view of the buc et with the scoops full open ready to descend upon the material from which it is to receive its load. Fig. 5 is a side view showing the bucket partly open and the scoops in the dischar ing position, and Figs 6, 7, and 8 are views illustrating details of my invention.

Referring to the drawings, A is theshell of the bucket, having bearings a a for the two transverse shafts, which are prevented from turning in the shell by the locking-plates a'. Mounted on the shafts are arms C, two arms being hun from each shaft, one at each side These arms C have segmental slots c for the passage of the ends of the rods d, carried by the buckets D. Mounted in bearings in the arms C C are rock-shafts E each edge of the bucket, and a central-segment F. .Each segment F is groovedatthe edge to receive an opening-rope I, which is attached to the segment at the rod d, as shown in Fig. 1 This rope I passes from the segment around a guide-sheave i, mounted in bearings on the shell, andaround a guidesheave fi', also on the shell, as indicated in Fig. 1. There is one of these ropes at each side of the bucket, and by drawing upon the ropes the bucket is opened to the position shown in Fig. 4.

G G are the closing-chains attached to the A lrod d, mounted in grooves in the periphery of the se ments E', and these chains pass around the id ers g on a rod G', mounted on the shell A. The chains then cross each other at this point and pass to their respective drums B', which are loose on the shafts B B and form continuations of hubs of the wheels B2. These wheels are grooved for the reception ofthe closing-ropes J, which are attached at j y' to their respective wheels and pass through a central opening a in the shell A.

K is a rope-guard attached at the outer casing and hung from a transverse rod 7c, as shown in Fig. l, thus preventing the closingropes from passing out of the groove when the said closing-ropes are slack.

The scoops D D are in the present instance quadrangular in shape and are connected at their upper inner corners to the shell Aby links D', which are pivoted at d2 to the shell and at d' to the scoops, so that the scoops swing from the pivots d2 as a center and also swing independently on the pivot d' as a center.

The rods d are mounted in bearings on the outer upper corner of each scoop, as illusthe segments E and F the scoops are under the control of both the opening and closing ropes and are also hung from the shafts B B by the arms C C, but owing to traveling in the segmental slots have a certain amount of independent motion in respect to said arms, accomplishing the result sought for-namely, the tiltin of the scoops in such a manner when loa ing the bucket that they will receive the material with the least amount of friction and to o en the bucket to discharge the contents wit the least amount of opening.'

It will be noticed in referring to Fig. 4 that fwiclthe bucket is full open ready to dig into,

9o trated, and as the rods are connected to both ICO l I I i i i the material to be loaded the enlarged bear- 'in s c of the arms C rest in a recess a in the shell of the bucket A, so that the strain 1s taken directly by the shell of the bucket, the other parts being relieved considerably of strain. In opening, the projecting bearings of the arms C strike the edges a2 of the shell A, as illustrated in Fig. 5, and the rods d, attached to the rear ends of the buckets, travel in the slots c, opening the bucket to the position shown in Fig. 5, the angle of the bottoms of the scoops being such that the material will readily ilow from the bucket.

The operation of my improved bucket 1s as follows: When the closing-rope is under tension, the bucket is full open, as shown clearly in Fig. 4, with the scoops in a vertical position. The bucket is then allowed to fall onto the pile of material from which the load is to be taken, and then by -drawing upon the closing-ropes J J the irst `movement is to cause the scoops D D to swing on the shafts E. The rods d d travel in the slots c until the scoops assume the-position shown by dotted lines in Fig. 4. In this position the bucket is about one-third closed. The bottoms of the scoops are at such an angle that the material can readily flow into the scoops as they are drawn together, thus decreasing the resistance of the material. By continuing the movement of closing the bucket the scoops swing on the shafts B B, the hubs c irst engaging the portion a2 of the shell so as to arrest movement of the arms C, and by continuing the pull upon the chains the bucket is closed. During the last portion of the movement the arms C C back away from each other, as in Fig. 1. The bucket can then be transferred to any point desired in the usual manner. When it is wished to discharge the bucket, the opening-rope is drawn taut until the scoops swing to the position shown in Fig. 5. By this movement the arms C C are drawn together toward each other until they strike the edges a2 of the shell A, and when the scoops swing out the rods d travel in the segmental slots until the scoops assume the position illustrated in Fig. 5. The angle of the bottoms of the scoops is such that the material will readily flow from the bucket. It will be noticed that when in this position the inner edges ofthe scoops are moved apart onlylto a limited extent, so that the material is allowed to discharge through a comparatively small opening, as it will be understood that the path of the bucket in closing is not the same as in opening, as in opening the angle of the bottom must be steep enough to allow the material to readily iiow from the bucket, while in closing the angle of the bottom of the scoops must be such as to offer the least resistance to the material flowing into the bucket. It will be understood that the slots in the arms C C form stops at each end to limit the movement of the scoops D in respect to the arms. In some instances notches ma be made in the arms in place of the slots, a though I prefenthe construction shown.

I claim as my invention- 1. The combination in a hoisting-bucket of the clam-shell type, of a shell, arms pivoted to said shell, scoops hung from said arms and from the shell, with means for opening and closing the bucket, the parts being so arranged that there is a certain amount of lost motion between the arms and the scoops, whereby the ath of the scoops in closing will be different om the path of the scoops in opening, substantially as described. y

2. The combination in a hoistin -bucket of the clam-shell ty e, of a shel shafts mounted on the shel arms hung from the shafts and having segmental slots, shafts mounted in the said arms, segments mounted on said shafts, scoops attached at their outer ends to the segments and hung at their inner ends from the shell, said outer ends of the scoops being guided in slots of the arms, and opening and closing means connected to the segments, substantially as described.

3. The combination in a hoisting-bucket of the'clam-shell type, of a casifngi scoops,

links connecting the inner ends o e scoops with the casing, transverse shafts, arms hung from the shafts and having segmental slots therein, shafts carried by said arms, segments mounted on the said shafts, rods by which the said segments are attached to the scoops, said rods extending through the slots in the arms, and means for operating the said parts, substantially as described.

4. The combination in a hoisting-bucket of the'clam-shell type, of a casing, shafts mounted in the casing, wheels mounted on the shaft-s, a closing-rope secured to each wheel and passing up throu h the shell, drums on the hubs of said whee s, arms hung from the said shafts, segmental slots in the arms, shafts carried by the said arms, inner and outer segbments mounted on the shafts, rods carried y the segments, scoops hung from the rods at their outer ends, and links connecting the inner ends of the scoops with the shell, closing-chains attached to the drums crossing each other andpassing around the inner segments to the rods, and openingropes passing from the said rods around the outer segments, substantially as described.

5. The combination in a hoisting-bucket of the clam-shell type, of a shell having side flanges forming stops, scoops, rods connecting the inner ends of the scoops with the shell, transverse shafts, arms hung from the said shafts, shafts carried by said arms, segments on the said shafts, rods carried by the segments and to which the outer ends of the scoops are connected, stops on the arms to limit the movement of the scoo s in respect to the arms so that when the bucket is opened 'IIO ' the arms will contact lIO A with the edges of the position so that the shell resists the thrust" shell allowing the scoops to swing so that the directly relieving the mechanism of strain, bottoms of the scoops will assume such an substantially as described.

angle that the material will readily discharge t In testimony whereof I have signed my 15 from the bucket, substantially as described. name to this specication in the presence of 6. The combinatlon of a shell, scoops hung two subscribing witnesses. therefrom, the 'shell having soiris at each end, ALFRED D MOSBY arms hung from the shell an om which the scoops are indirectly hung, projections on the Witnesses:

arms arranged to rest against the stops on E. R. LOUGHERY, the shell when the'bucket is in the full-open Jos. H. KLEIN. 

